Physicists from the Large Underground Xenon (LUX) dark matter detector will announce the experiment’s first results on Wednesday, Oct. 30, during an event at the Sanford Underground Research Facility in Lead. The event will be webcast live in Club Buzz.

Dark matter is a mysterious substance. Though it has little-to-no detectable interaction with ordinary matter, it is thought to be the predominant form of matter in the universe. The leading candidate particle for dark matter has been dubbed the WIMP—for “weakly interacting massive particle.” LUX is searching for WIMPs.